Concrete-curb armor.



c. A. MILLER & c. K. DOAK.

CONCRETE CURB ARMOR.

APPLICATION FILED JULY 26,1915.

1,167,585, Patented Jan. 11, 1916.

INVENTORS Charlw A. Miler OZaude if. 170% w wimw/m A TTORNE Y.

UNTT @TATS PATENT @FFTQ.

CHARLES A. MILLER AND CLAUDE K. DOAK, OF SAN FRANCISCO, CALIFORNIA.

GONCRETE-GURB ARMOR.

Application filed July 26, 1915.

To all whom it may concern:

Be it known that we, CHARLES A. MILLER and CLAUDE K. DOAK, citizens of the United States, residing at San Francisco, in the county of San Francisco and State of California, have invented a new and useful Improvement in Concrete-Curb Armor, of which the following is a specification.

Our object is to make a guard for cement work, and especially for concrete curbs having ample supporting surfaces and having ample openings below the supporting surfaces, so that when the concrete is applied beams of concrete will form through the openings connecting the concrete on one side of the armor to the concrete on the other side of the armor, thereby holding the concrete from splitting.

The accompanying drawings illustrate the invention, in which Figure 1 is a perspective of a section of concrete curb armor embodying the principles of our invention. Fig. 2 is a cross section on the line 22 of Fig. 1. Fig. 3 is a horizontal section taken on the lines 33 of Figs. 1 and 2. Fig. 4 is a cross section similar to Fig. 2 with the concrete applied. Fig. 5 is a horizontal section similar to Fig. 3 with the concrete applied.

Referring to the drawings in detail, our concrete curb armor is in the form of a metal rail 1 comprising the buffer 2, the supporting posts 3 extending downwardly from the buffer 2, the webs 4 between pairs of the posts 3, there being openings 5 between the joined pairs of posts, the base 6 connecting the lower ends of the posts 3 and webs A, the posts 7 extending downwardly from the base 6, the webs 8 connecting pairs of posts 7, there being openings 9 between the Joined pairs of'posts, and the base 10 connecting the lower ends of the posts 7 and webs 8. The rail 1 may be rolled like an I-beam and then the openings 5 and 9 punched. The openings 5 are in vertical planes between the openings 9, so that the openings 5 are above the webs S and the webs 4: are above Specification of Letters Patent.

Patented Jan. 11, 1916.

Serial No. 41,918.

the openings 9. The relative proportions of the lengths of the openings 5 and 9 to thelengths of the webs 4 and 8 may be varied. The lower faces 11 and 12 of the bases 6 and 10 are as flat as practical.

When the concrete 13 is placed in position concrete beams 14. are formed through the openings 5 and 9, thereby securely connectlng the concrete body 15 on one side of the armor to the concrete body 16 on the other side of the armor, so as to hold the curb from splitting under a blow upon the outer face of the bufler 2, said bufier forming a metal corner for the concrete. The lower face 17 of the bufier and the lower fiat face 11 of the base 6 rest upon the concrete beams 14.

7e call particular attention to the extended flat metal surfaces resting upon correspondingly extended flat concrete surfaces where the concrete bonds through the armor.

The posts 3 and 7 are simply vertical ribs extending from the sides of the webs 1 and 8, and the webs may be very thin.

We claim:

A concrete curb armor comprising a buffer, posts extending downwardly from the transverse center of the buffer, webs connecting the posts in pairs, there being openings extending to the inner face of the buffer between the connected pairs of posts, a base connected to the lower ends of the posts and webs, second posts extending downwardly from the base, webs connecting the second posts in pairs, there being second openings between the connected pairs of second posts said openings extending to the lower face of the base and the second openings being in vertical planes between the first openings, and a second base connected to the lower ends of the second posts and webs.

Witnesses A. G. HARLAN,

SID. S. PALMER.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Eatents, Washington, D. C. 

